1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.custom.ppr;
20
21 import javax.faces.FacesException;
22 import javax.faces.component.UIViewRoot;
23 import javax.faces.context.FacesContext;
24 import javax.faces.event.PhaseListener;
25 import javax.faces.lifecycle.Lifecycle;
26
27 /**
28 * A lifecycle wrapper which just decorates the lifecycle passed in to the constructor.
29 * On any ppr request this wrapper will wrap the UIViewRoot of the current view to
30 * make it possible to process just those components in question (affected components).
31 */
32 public class PPRLifecycleWrapper extends Lifecycle
33 {
34 private final Lifecycle delegate;
35
36 public PPRLifecycleWrapper(Lifecycle delegate)
37 {
38 this.delegate = delegate;
39 }
40
41 public void addPhaseListener(PhaseListener listener)
42 {
43 this.delegate.addPhaseListener(listener);
44 }
45
46 public void execute(final FacesContext context) throws FacesException
47 {
48 if (PPRSupport.isPartialRequest(context))
49 {
50 FacesContext wrappedContext = new PPRFacesContextWrapper(context)
51 {
52 public UIViewRoot getViewRoot()
53 {
54 UIViewRoot viewRoot = context.getViewRoot();
55 if (viewRoot == null)
56 {
57 return null;
58 }
59
60 return new PPRViewRootWrapper(viewRoot);
61 }
62 };
63
64 this.delegate.execute(wrappedContext);
65 }
66 else
67 {
68 this.delegate.execute(context);
69 }
70 }
71
72 public PhaseListener[] getPhaseListeners()
73 {
74 return this.delegate.getPhaseListeners();
75 }
76
77 public void removePhaseListener(PhaseListener listener)
78 {
79 this.delegate.removePhaseListener(listener);
80 }
81
82 public void render(FacesContext context) throws FacesException
83 {
84 this.delegate.render(context);
85 }
86 }